Time Mark 2594 Data Sheet

.19 dia. typ.

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MODEL 2594

TIME MARK is a division of

3-Phase Monitor

 DPDT 600VAC Output Contacts

 Adjustable Failure Level

 Automatic Reset

 5 Year Unconditional Warranty

DESCRIPTION

The Model 2594 3-Phase Monitor is designed for use
with applications which require high control voltage (up
to 600VAC). The Model 2594 protects 3-phase
equipment and motors from phase loss, phase reversal
and low voltage. When the correct voltage and phase
rotation are applied, an internal DPDT relay energizes.

A fault condition drops out the relay and the FAILURE
INDICATOR LED illuminates. When the existing fault is
corrected the unit will automatically reset. The Model
2594 can detect a phase loss condition even when
regenerative voltage is present. It may be used with
WYE or Delta systems; no neutral connection required.

Standard operating ranges are available from 120 to
575VAC, 60Hz and 380VAC, 50Hz.

DIMENSIONS

SPECIFICATIONS

Model A2594 B2594 C2594 D2594 EX2594

Nominal AC Voltage
(phase to phase)

Adjustment Range

Frequency

Power Consumption

Transient Protection

Repeat Accuracy

Response Time

Reset Time

Reset Type

Output Contacts

Expected Relay Life

Operating Temp

Humidity Tolerance

Enclosure Material

Mounting

Weight

120VAC 208/240VAC 480VAC 575VAC 380VAC

85-125 160-260 380-500 450-600 300-400

60Hz 50Hz

2.1W 3.3W 4.2W 6.9W 4.2W

2500V for 10ms

± 0.1% (fixed conditions)

0.05 seconds (fixed)

0.05 seconds (fixed)

Automatic

DPDT 3A at 480/600VAC 80% PF

10A at 240VAC 80% PF resistive

Mech: 10 million operations
Elec: 100,000 at rated load

- 20º to +131º F

0-97% w/o condensation

20 gauge steel

Surface

17 oz.

11/2011

© 2011 TIME MARK CORPORATION

MODEL 2594

L1L2L3

1 1 1 2 2 2

Control
Voltage

Optional

Alarm Circuit

Stop

Start

Model

2594

L2 L3L1

1 1 1 2 2 2

Model

2594

Control
Voltage

Lamp

Bell

Load(s)

TIME MARK is a division of

3-Phase Monitor

READ ALL INSTRUCTIONS BEFORE INSTALLING, OPERATING OR SERVICING THIS DEVICE.

KEEP THIS DATA SHEET FOR FUTURE REFERENCE.

GENERAL SAFETY

POTENTIALLY HAZARDOUS VOLTAGES ARE PRESENT AT THE TERMINALS OF THE MODEL 2594.

ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING.

THIS DEVICE SHOULD BE INSTALLED AND SERVICED BY QUALIFIED PERSONNEL.

Installation Instructions

INSTALLATION

Connect the 3-phase wiring to the terminals marked L1,
L2, L3.

Connect the control wiring to the terminals with the contact
markings (refer to the diagram on the unit). The markings
shown on the unit are the failed condition of the contacts.

Apply power.

If the contacts do not transfer (FAILURE INDICATOR-On),
check that all three phases are present and of the correct
voltage.

If all phases are correct, rotate the VOLTAGE LEVEL
adjustment counter-clockwise to the MIN position. If the
contacts still do not transfer, remove power from the unit.

Reverse two of the three input wires and re-apply power.
The contacts should transfer to the normal condition
(normally-open contacts closed, FAILURE INDICATOR­Off).

ADJUSTMENT

Note: During adjustment you may wish to install a jumper
across the control contacts to prevent cycling the load on
and off.

Rotate the VOLTAGE LEVEL adjustment slowly clockwise
until the contacts transfer to the failed condition (FAILURE
INDICATOR-On). Slowly turn the adjustment counter­clockwise until the contacts reset to the normal condition
(FAILURE INDICATOR-Off).

Remove the jumper, if installed.

This setting will be correct for most applications. If
nuisance tripping occurs, turn the VOLTAGE LEVEL
slightly farther counter-clockwise.

Any adjustments to the VOLTAGE LEVEL, to eliminate
nuisance tripping, should be made in very small
increments, until the true nuisance trips are eliminated.

TYPICAL APPLICATION

Individual Motor Protection

TYPICAL APPLICATION

System Alarm Operation

WARRANTY

This product is warranted to be free from defects in
materials and workmanship, and is covered by our
exclusive 5-year Unconditional Warranty. Should this
device fail to operate for any reason, we will repair it for
five years from the date of manufacture. For complete
warranty details, see the Terms and Conditions of Sales
page in the front section of the Time Mark catalog or
contact Time Mark at 1-800-862-2875.

11/2011

© 2011 TIME MARK CORPORATION